The in-demand international hitman flew into Teesside on Thursday to complete the big money move from French top flight side Toulouse.

The frontman, who can play all along the front line, has agreed a four-year deal at the Riverside.

He became Boro’s third signing of the summer after last week’s swift double capture of £5m midfielder Jonny Howson from Norwich and £2m right-back Cyrus Christie from Derby County.

And Braithwaite slots in as the third most expensive Boro signing ever, after £12.7m Brazilian flop forward Afonso Alves from Heerenveen in 2008 and last summer’s £10.8m signing of Dutch midfielder Marten de Roon from Atalanta.

The move progressed quickly as a few sticking points were finally removed.

The switch has been agreed in principle last week but there was some intense haggling between the clubs over the structure of the deal.

Martin Braithwaite (Image: REMY GABALDA/AFP/Getty Images)

And the broad outline of a personal package was agreed in principle last week too.

And once the final snags were ironed out progress was swift.

The Dane flew in on a private jet with his agents and partner to meet the Boro top brass and fine tune the terms of his deal and undergo a stringent medical.

And he also took the opportunity to visit the impressive facilities at the swish Rockliffe Park training ground.

The Boro squad is in a warm weather training camp in Portugal and don’t return until after Saturday’s friendly with Chesterfield, although it is not known yet if the player will feature in that match.

Boro will be delighted to get the key deal over the line after fending off interest from a string of Premier League sides.

The speedy striker, who scored 11 goals in 34 games for a struggling side in France’s top-tier last term, has been courted by West Ham, Brighton and Bournemouth over the summer but Boro have worked hard to persuade him the Riverside offers a realistic route to the top flight.

Braithwaite, 26, started his career at Danish club Esbjerg and tasted success in the Superligaen, lifting the Danish Cup in 2012/13.

He made his international breakthrough in June 2013 and later that same summer made his move to Toulouse where has scored 40 goals in 149 games over four seasons.

Versatile Braithwaite can play anywhere across the front-line and has proved equally effective on the left flank and up front for Toulouse striker and that will appeal to Garry Monk as he shapes his squad for a Championship promotion push.

Martin Braithwaite in action for Toulouse (Image: AFP)

Boro also wrapped up a deal for teenage striker George Miller from Bury who will initially go into the Academy squad.

And they are continuing their pursuit of Nottingham Forest striker Britt Assombalonga.

Meanwhile Boro they have been linked in London with renewed interest in West Ham’s £5m rated keeper Darren Randolph